Spectral characteristics of protons at low and high altitudes during the geomagnetic storm of July 29, 1977

Details Spectral characteristics of protons at low and high altitudes during the geomagnetic storm of July 29, 1977 Spectral characteristics of protons at low and high altitudes during the geomagnetic storm of July 29, 1977

May 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984kosis..22..399k&link_type=abstract

Kosmicheskie Issledovaniia (ISSN 0023-4206), vol. 22, May-June 1984, p. 399-405. In Russian.

Computer Science

Geomagnetism, High Altitude, Low Altitude, Magnetic Storms, Magnetospheric Proton Density, Spectral Energy Distribution, Adiabatic Conditions, Electron Diffusion, Electron Mobility, Outer Radiation Belt, Plasma-Electromagnetic Interaction, Proton Energy, Proton Precipitation

Scientific paper

The dynamics of the spectra of quasi-trapped protons at an altitude of about 500 km in the energy range of 50-500 keV during the magnetic storm of July 29, 1977 was studied on the basis of Cosmos-900 data. These data are compared with simultaneous spectral measurements (roughly in the same energy range) taken near the equatorial plane by ATS-6, GEOS-1, and 1977-007. A comparative analysis of the spectral characteristics of protons at low and high altitudes during particle precipitation in the outer radiation belts shows that the formation of low-altitude streams is due to the combined effect of two mechanisms: the adiabatic transport of particles and the development of strong pitch-angle diffusion at low altitudes during the interaction of particles with ion-cyclotron electrostatic waves.

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